A name coined by vegans to refer to meat eaters. Where veganism is the philosophy that humans aren't better than animals and shouldn't be exploited, carnism is the philosophy that animals are inferior to humans and it's fine to eat them, test on them, use them for entertainment and the like.

"I'm really sad about how sea world is exploiting orcas."
"Stupid animals don't even know what's happening to them. Why should we care about animals? Pfft. Animals."
"Carnist."
"Vegan."

The Urban Dictionary T-Shirt

Intended and coined by vegans as a pejorative term for those who consume a meat-based or meat-heavy diet, subsequently adopted as a badge of honor by some of those it targeted. Related to carnivore. Often paired with bloodmouthed for emphasis.

The bloodmouthed carnist lifestyle is definitely not animal-friendly; you don't kill and eat your friends.

The Urban Dictionary T-Shirt

It defines a proponent of meat-eating and human consumption of animals in general. It'd be what meat-eaters would call themselves if they could only accept that their diet stems from a philosophy of speciecism and a belief that humans are superior to other sentient beings.

Given that meat eating it is a choice and not an actual necessity in civilised societies, carnism is a philosophy that seeks to defend carnists in their abject subjugation and oppression of non-human animals by justifying their decision and making animals appear as mere objects.

John: Fuck, I love me some bacon.

Mary: Please don't be such a carnist.

John: But I like BACON. What's a carnist anyway?

Mary: Someone who thinks that animals are meant to be eaten and feels no remorse for it.

The Urban Dictionary T-Shirt

A term applied to people who eat meat, usually by vegetarians attempting to feel superior

Moonchild: "UH! You're eating animal flesh?! What are you, a Carnist?"
Dave: "Uh, nope. Just eating a balanced diet of steak and vegetables."
Moonchild: "Civilised societies don't NEED to eat meat."
Dave: "Civilised societies don't NEED to be condescending either. Ghandi was a vegan, and he tried to change the world by being a humble example, not a smug, whiny twat. Besides, I eat all natural food, you eat vegetables and a bunch of pills. We're not meant to sustain ourselves with pills from a bottle."
Moonchild: "Murderer!"
Dave: "You're right. Prepare to die and be eaten."